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Finding the Fourth Proportional to 268,673.40, 402,912.90 and 108,682.20

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Solution

The fourth proportional to 268,673.40, 402,912.90 and 108,682.20 is: 162,983.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    268,673.40 : 402,912.90 = 108,682.20 : x
  2. Step 2: Convert to fraction form
    268,673.40/402,912.90 = 108,682.20/x
  3. Step 3: Cross multiply
    268,673.40x = 402,912.90 × 108,682.20
  4. Step 4: Simplify right side
    268,673.40x = 43,789,460,380.38
  5. Step 5: Solve for x
    x = 43,789,460,380.38/268,673.40
  6. Step 6: Final answer
    x = 162,983.98

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.